Governor for gas engines



Jan, 4,1927, 1,613,470

P. E. MACK GOVERNOR FOR GAS ENGINES 7 Filed Oct. 24, 1921 2 Sheets-Sheet1 FIG.1

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. T S I VNOR @Mmaaflx CW T Patented Jan. 4, 1927.

MACKQOE MILW'AUKEE, NISGQNSIN, AQSIG'NQR, BY IVIESNE ASSIGNIWIEN'JI'S,TOBRIGGS &-STRATTON OORPORAIIQN, OF MELWA'UKEE, WISCONSENQA "C9RPORA-TION OF DELAWARE.-

GOVERNOR-FOR GAS EhIGINIES.-

Application filed October 24, 1921.

This invention relates to the fly-wheel construction of small stationarygas engines of the type usually employed for driving washing machinesand other light machinery, and particularly to the utilization of p theaywheel as a means for constituting a part of the governor forcontrolling the speed of the gas engine and as a blower fan for creatinga current of air for cooling the 'engine cylinder.

Another object of the invention is to simplify the construction of theparts to reduce the cost of manufacture.

Vith the above and other objects in view, the invention consists in thegas engine governor and-blower as herein claimed and all equivalents.

Referring to the accompanying drawings, in whichlike' characters ofreference indicate the same parts in different Views,

Figure 1 is a plan view of a gas engine with the fiy-wheel sectioned andconstructed in accordance with this invention;

Figure 2 is a side elevation thereof with the-'flyswheel againsectioned;

Figure 3 is a detail View showing the springand governor arm connectionsof the throttle stem, and

Figure 4 is a perspective view of one of the governor weights.

In these drawings, indicates a gas engine crank-case mounted on a base11, constituting the fuel reservoir and supporting:

the engine cylinder 12, which, instead of being water-jacketed, isprovided with projecting fins or ribs 13, which are inclined in the samedirection so as to be in line with a current of air created by theblower action of one of the fly -wheels 14.

This fly-wheel is keyed on the crank-shaft and is overhung to bring theweight of its rim near the vertical plane of the bearing for thecrank-shaft in the crank-case. Incidentally this overhanging feature oftho fly-wheel is utilized to constitute a housing of the hollow interiorfor containing the governor parts and the blades of the blower fan.Extending inwardly from the rim of the fly-wheel and preferablyintegrally formed therewith are radial blower blades 16, which, byreason of the rapid rotation of the fly-wheel, tend to create a fanaction, causing a current of air to flow from the center of the wheeloutwardly. This action Serial No. 510,065.

is restrained to some extent by a stationary air deflector 17 consistingof a sheet-metal plate secured to spacing'lugs on the crankcase andfitting withinthe annular flange around the face of the fly-wheelf Airis free to enter through the central opening of the air deflector, butits outlet is confined to the single opening 18 at the edge of thedeflector, which is so positioned as to direct the current of airagainst the cylinder and in line with the ribs 13.

Bent strips of 1 metal form governor weigl'its 19, which are carriedwithin the fly-wheel on. headed pins 20. These pins may be threaded inthe fly-wheel, but are.

preferably given a driving fit which is sufiicient for the purpose.These weights fulcrum at their bends, where they bear against the faceof the hub of thefly-wheel and are capable of swinging from the fullline position to the dottedline posit-ion of'Figure 1 under centrifugalforce whenthe engine is running at speed, the'openings 21 in the weightsthrough which the headed pins pass being of suchshape as to freelypermit of this movement.

The inner ends of the governor weight-s bear against a washer 22, whichis-loosely mounted on the crankshaft but iscompelled to turn therewithbyreason of notches in its edges engaging the innermost headed pins 20; Aspool 23, preferably of hardwood, isalso loosely mounted on thecrankshaftand bears against the disk 22, butdoes not rotate, as willlater be understood. It

is provided'with a pair of headed pins 24 passing through openings inthe forkedends of a governor arm 25.' This forked governor arm fulcrurnson a projection 26 benttherefrom at the crotch of its fork andbearing'on the end of the crank-case hearing. The governor arm is heldin place by a headed through an opening thereof.

A. throttle-valve 28 in the intake pipe 29 between the carburetor 30 andthe cylinderhead has projecting stem 31, on which is fixed a U-shapedsheet metal throttle-arm 32, one end of which is connected by a link 33with the end of governor-arm 25 and the other end to a spring 34 on anadjustable clip 35. The spring thus tends to close the throttle and toswing the governor-arm so as to press its rounded forked ends againstiii) pin 27 on the crank-case passing,

the spool 225 and hold the governor weights in the full-line position,as shown in Figure 1. However, the swinging of the governor weightstoward their dotted line position as the engine acquires speed, servesto forcethe spool against the forked ends of the governor-arm, and, byrocking said arm on its fulcrum, the throttle is moved toward its closedposition against the action of the spring.

It will be seen that, by means of this invention, the hollow fly-wheelis utilized as a blower for cooling the engine cylinder and as agovernor for controlling the speed of the engine and that the structurehas been simplified to make it inexpensive to mamr facture.

What I claim as new and desire to secure by Letters Patent is:

1. In a governor, a shaft, a fly-wheel fixed thereon, a collar loose onthe shaft and urged toward the lly-wheel with pressure, angularly bentarms with their ends confined between the collar and the fly-wheel andpressed against the face of the fly-wheel by the pressure of the collar,projections on the face of the fiy-wneel parallel with the axis of theshaft, there being openings in the arms loosely receiving theprojections to be guided thereby, and means controlled by the movementsof the collar caused by the rocking of the arms on the face of thefly-wheel.

In a governor, a shaft, :1 fly-wheel lixcd thereon, a collar looselymounted on the shaft and urged toward the fly-wheel with pressure,angularly bent arms with their ends clamped between the collar and theface of the fly-wheel and held in direct hearing against the face of thefly-wheel by the pressure of the collar, said arms being capable ofhaving a rocking movement on the rounded surface of their bent portionsagainst the face of the lly-wheel, means for holding the arms in place,and means dependent on the movements of the collar caused by theswinging of the arms.

3. In a governor, a shaft, a fly-wheel fixed thereon and having a flatface, a collar loosely mounted on the shaft and urged toward thefly-wheel with pressure, angu- 'larly bent arms with their ends confinedbetween the face of the fly-wheel and the collar and pressed in directbearing contact with the face of the flywheel by the pressure of thecollar, said arms being capable of rocking on the rounded surface oftheir bent portions against the flat face of the fly-wheel under theaction of centrifugal force and so causing the collar to slide on theshaft, there being openings through the arms, pins projecting from theflat face of the fly-wheel and loosely passing through the openings toguide the arms without interfering with their rocking motion, and meansoperated by the sliding movement of the collar.

l. in a gas engine governor, a fly-wheel mounted on the engine shaft,pins projecting from the face of the fly-wheel, bent governor weightsbearing on the face of the fly-wheel and mounted on said pins, a washerloosely mounted on the engine shaft and bearing on the inner ends ofthegovernor weights, a collar loosely mounted on the engine shaft andbearing on the washer, pins on the collar, a forked governor-arm havinga bent out projection bearing on the engine shaft bearing to serve as afulcrum and having its forked ends engaged with the pins of the collar,a pin on the crank-case for holding the governor-arm in place, and aspring-retracted throttle connected with the governor-arm. I

in a governor, a shaft, a fly-wheel fixed thereon, a collar loose on theshaft and urged toward the fly-wheel with pressure, pins projectingfromthe face of the fly-wheel, a washer loosely mounted on the shaft andhaving the collar bear thereon, said washer engaging the pins to turnwith the fly-wheel, angularly bent arms with their ends confined betweenthe washer and the fly-wheel and pressed against the face of thefly-wheel by the pressure of the collar, said arms having openingsreceiving the said pins, and means controlled by the movements of thecollar caused by the rocking of the arms on the face of the fly-wheel.

In testimony whereof I allix my signature.

PER-RY MACK.

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